Isotope Half Lives and Energies
This page is not meant to be a comprehensive list of all information that is required to work safely with radiation. It is only a small fraction of isotopes available but it covers the commonly used isotopes in my research institute. I will add other data if requested though.
Isotope radiation information
| Isotope | Half life | Decay type | Daughter nuclide | Decay energy | Shielding required |
|---|---|---|---|---|---|
| Tritium (Hydrogen-3) | 12.3 years | Beta | Helium-3 | 18 keV | No specific shielding required |
| Carbon-14 | 5730 years | Beta | Nitrogen-14 | 156 keV | No specific shielding required although thin perspex could be used |
| Phosphorous-32 | 25 days | Beta | Sulphur-32 | 1.709 MeV | 1cm perspex or equivalent |
| Iodine-125 | 60 days | Gamma | Tellurium-125 | Maximum 35 keV | Lead or other high density material |
First published on 3rd February 2009 and last modified on 25th June 2011.
